Figure 2

Comparison of vibration detection thresholds in young and elderly subjects, for two frequencies of vibration at several body sites. The histograms show the mean and standard error of vibration detection thresholds of all young (open columns) and all elderly subjects (filled columns) at each site tested, for two frequencies of vibration (30 Hz – upper panel, 200 Hz – lower panel). The y-axis represents the peak to peak amplitude of vibration detection thresholds (dB re: 1 μm peak-to-peak). Statistically significant comparisons are indicated by an asterisk (*).